BEIJING - Overseas equity of oil and gas production of China National Petroleum Corporation (CNPC) rose 10 percent year-on-year in the first quarter of 2019.

Production came in at 26.09 million metric tons of oil equivalent in Q1, according to the international branch of CNPC, the country's largest oil and gas producer and supplier.

The stable growth of oil and gas output is due to efforts made in enhancing quality, lowering cost and increasing efficiency, CNPC said.

The listed firm has announced to focus on high-quality development of its overseas oil and gas operations, and reach its annual targets.

The State-owned oil firm started overseas production in 1993.